title: Development and fundamental evaluation of flexible viewpoint laparoscope using a oblique viewing laparoscope.
abstract: We have developed a new type of laparoscope with flexible view point. This system can move the view without moving laparoscope itself. To achieve the wide range of view moving, we used a commercial 30° oblique-viewing laparoscope and special lens. The system control the view by rotating the oblique-viewing laparoscope and a sleeve which is attached to the special lens by motors independently. From the evaluation experiments, we confirmed the laparoscope which has 70° view angle could move the view ±60°. In the image quality evaluation experiment, degradation of the image quality was small. The positioning accuracy was 2.4±1.7 mm repeatability was 0.48 mm which lead to precise view control. The system achieve the safe and smooth manipulation of the laparoscopic view.
authors.forename: Y
authors.initials: Y
authors.lastname: Fukushima
authors.forename: E
authors.initials: E
authors.lastname: Kobayashi
authors.forename: T
authors.initials: T
authors.lastname: Ando
authors.forename: I
authors.initials: I
authors.lastname: Sakuma
mesh_terms: D006801:Humans; D007089:Image Enhancement; D020706:Laparoscopes; D010535:Laparoscopy / Q000295:instrumentation* / Q000379:methods*; D007909:Lenses